send stat_tag in the url for windshaft

NEWS

@@ -6,6 +6,7 @@
     - Add getActivePointsBBox method
     - Added renderer cache when the map is not animated
     - Added interaction method
+    - Added stat_tag in the map creation url for windshaft provider
 
 2.4.01
     - fixed rectangle anchor and size #42

lib/torque/provider.windshaft.js

@@ -31,10 +31,13 @@
     if (this.options.data_aggregation) {
       this.options.cumulative = this.options.data_aggregation === 'cumulative';
     }
+    var e = this.options.extra_params || (this.options.extra_params = {});
     if (this.options.auth_token) {
-      var e = this.options.extra_params || (this.options.extra_params = {});
       e.auth_token = this.options.auth_token;
     }
+    if (this.options.stat_tag) {
+      e.stat_tag = this.options.stat_tag;
+    }
 
     this._fetchMap();
   };

test/provider.windshaft.test.js

@@ -96,6 +96,18 @@ module('provider.windshaft', {
     ok(lastCall.indexOf("auth_token=test_auth_token") !== -1);
   })
 
+  test("include stat_tag", function() {
+    windshaft_named = new torque.providers.windshaft({
+      table: 'test',
+      user: "rambo",
+      stat_tag: 'test',
+      named_map: {
+        name: 'test_named'
+      }
+    });
+    ok(lastCall.indexOf("stat_tag=test") !== -1);
+  })
+
 test("auth_token as array param", function() {
     windshaft_named = new torque.providers.windshaft({
         table: 'test',